From 7612cd4666a1156f142cf8a28e6f3485eebe1094 Mon Sep 17 00:00:00 2001 From: Flinner Yuu Date: Sat, 10 Dec 2022 22:59:06 +0300 Subject: [PATCH] init --- .gitignore | 1 + include/README | 39 +++++++++++++ lib/README | 46 ++++++++++++++++ platformio.ini | 15 +++++ src/main.ino | 147 +++++++++++++++++++++++++++++++++++++++++++++++++ test/README | 11 ++++ 6 files changed, 259 insertions(+) create mode 100644 .gitignore create mode 100644 include/README create mode 100644 lib/README create mode 100644 platformio.ini create mode 100644 src/main.ino create mode 100644 test/README diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..03f4a3c --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +.pio diff --git a/include/README b/include/README new file mode 100644 index 0000000..194dcd4 --- /dev/null +++ b/include/README @@ -0,0 +1,39 @@ + +This directory is intended for project header files. + +A header file is a file containing C declarations and macro definitions +to be shared between several project source files. You request the use of a +header file in your project source file (C, C++, etc) located in `src` folder +by including it, with the C preprocessing directive `#include'. + +```src/main.c + +#include "header.h" + +int main (void) +{ + ... +} +``` + +Including a header file produces the same results as copying the header file +into each source file that needs it. Such copying would be time-consuming +and error-prone. With a header file, the related declarations appear +in only one place. If they need to be changed, they can be changed in one +place, and programs that include the header file will automatically use the +new version when next recompiled. The header file eliminates the labor of +finding and changing all the copies as well as the risk that a failure to +find one copy will result in inconsistencies within a program. + +In C, the usual convention is to give header files names that end with `.h'. +It is most portable to use only letters, digits, dashes, and underscores in +header file names, and at most one dot. + +Read more about using header files in official GCC documentation: + +* Include Syntax +* Include Operation +* Once-Only Headers +* Computed Includes + +https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html diff --git a/lib/README b/lib/README new file mode 100644 index 0000000..6debab1 --- /dev/null +++ b/lib/README @@ -0,0 +1,46 @@ + +This directory is intended for project specific (private) libraries. +PlatformIO will compile them to static libraries and link into executable file. + +The source code of each library should be placed in a an own separate directory +("lib/your_library_name/[here are source files]"). + +For example, see a structure of the following two libraries `Foo` and `Bar`: + +|--lib +| | +| |--Bar +| | |--docs +| | |--examples +| | |--src +| | |- Bar.c +| | |- Bar.h +| | |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html +| | +| |--Foo +| | |- Foo.c +| | |- Foo.h +| | +| |- README --> THIS FILE +| +|- platformio.ini +|--src + |- main.c + +and a contents of `src/main.c`: +``` +#include +#include + +int main (void) +{ + ... +} + +``` + +PlatformIO Library Dependency Finder will find automatically dependent +libraries scanning project source files. + +More information about PlatformIO Library Dependency Finder +- https://docs.platformio.org/page/librarymanager/ldf.html diff --git a/platformio.ini b/platformio.ini new file mode 100644 index 0000000..8abef7e --- /dev/null +++ b/platformio.ini @@ -0,0 +1,15 @@ +; PlatformIO Project Configuration File +; +; Build options: build flags, source filter +; Upload options: custom upload port, speed and extra flags +; Library options: dependencies, extra library storages +; Advanced options: extra scripting +; +; Please visit documentation for the other options and examples +; https://docs.platformio.org/page/projectconf.html + +[env:esp32dev] +platform = espressif32 +board = esp32dev +framework = arduino +lib_deps = knolleary/PubSubClient@^2.8 diff --git a/src/main.ino b/src/main.ino new file mode 100644 index 0000000..c3e791c --- /dev/null +++ b/src/main.ino @@ -0,0 +1,147 @@ +#include "Arduino.h" +#include +#include //Import the required libraries +#include + + + +#define DISCHARGE_PIN 23 +#define CHARGE_PIN 5 +#define MEASURING_PIN 36 +#define RESISTOR_VALUE 1e6 +#define DEVICE "ESP32" +#define WIFI_SSID "SSID_HERE" // Network Name +#define WIFI_PASSWORD "PASSWORD_HERE" // Network Password +#define MQTT_SERVER "test.mosquitto.org" +#define MQTT_PORT 1883 +#define MQTT_SUBSCRIBE_PUMP "plant/1/pump" + + + +WiFiMulti wifiMulti; +WiFiClient espClient; +PubSubClient client(espClient); + +void setup() +{ + // initialize LED digital pin as an output. + Serial.begin(9600); + + pinMode(CHARGE_PIN, OUTPUT); + digitalWrite(CHARGE_PIN, LOW); + + setup_wifi(); + setup_mqtt(); + +} + +// =============== LOOP ============ +void loop() +{ + float cap; + setup_wifi(); + setup_mqtt(); + + + cap = capacitance(DISCHARGE_PIN, CHARGE_PIN, MEASURING_PIN); + +} +// =============== LOOP END ============ + + +float capacitance(int discharge_pin, int charge_pin, int measuring_pin) { + unsigned int start_time, elapsed_time; + float nanoFarads; + + // discharge: + digitalWrite(charge_pin, LOW); + pinMode(discharge_pin, OUTPUT); + digitalWrite(discharge_pin, LOW); + // wait until the capacitor is fully discharged + while(analogRead(measuring_pin) > 0) { + //Serial.println(analogRead(measuring_pin)); + //Serial.print("discharging\n"); + }; + // stop discharging + pinMode(discharge_pin, INPUT); + + // Start charging + digitalWrite(charge_pin, HIGH); + start_time = millis(); + while(analogRead(measuring_pin) < 2588){// 2588 is 63.2% of 4096, which corresponds to full-scale voltage + } + + elapsed_time = millis() - start_time; + nanoFarads = ((float)elapsed_time / RESISTOR_VALUE) * 1e6; + Serial.println((long) nanoFarads); + delay(1000); + + return nanoFarads; +}; + +void setup_wifi() { + WiFi.mode(WIFI_STA); // Setup wifi connection + wifiMulti.addAP(WIFI_SSID, WIFI_PASSWORD); + + Serial.print("Connecting to wifi"); // Connect to WiFi + while (wifiMulti.run() != WL_CONNECTED) { + Serial.print("."); + delay(100); + } + Serial.print("Connected to "); + Serial.print(WIFI_SSID); + Serial.println(" Successfully"); + Serial.print(WiFi.localIP()); + Serial.println(" isn the local IP"); +} + +void setup_mqtt() { + client.setServer(MQTT_SERVER, MQTT_PORT); + client.setCallback(callback); +} + +void callback(char *topic, byte *message, unsigned int length) { + Serial.print("Message arrived on topic: "); + Serial.print(topic); + Serial.print(". Message: "); + String messageTemp; + + for (int i = 0; i < length; i++) { + Serial.print((char)message[i]); + messageTemp += (char)message[i]; + } + Serial.println(); + + if (String(topic) == MQTT_SUBSCRIBE_PUMP) { + Serial.print("Starting Pump for: "); + } +} + +void reconnect_mqtt() { + // Loop until we're reconnected + while (!client.connected()) { + Serial.print("Attempting MQTT connection..."); + // Attempt to connect + if (client.connect("ESP32-1")) { + Serial.println("connected"); + // Subscribe + client.subscribe(MQTT_SUBSCRIBE_PUMP); + } else { + Serial.print("failed, rc="); + Serial.print(client.state()); + Serial.println(" try again in 5 seconds"); + // Wait 5 seconds before retrying + delay(5000); + } + } +} + +void publish_mqtt(const char *topic, const char *sensor, float value) { + char buffer[40]; + sprintf(buffer, "plant1 %s=%.0f", sensor, value); + Serial.print("Publishing "); + Serial.println(buffer); + client.publish(topic, buffer); +} + + diff --git a/test/README b/test/README new file mode 100644 index 0000000..9b1e87b --- /dev/null +++ b/test/README @@ -0,0 +1,11 @@ + +This directory is intended for PlatformIO Test Runner and project tests. + +Unit Testing is a software testing method by which individual units of +source code, sets of one or more MCU program modules together with associated +control data, usage procedures, and operating procedures, are tested to +determine whether they are fit for use. Unit testing finds problems early +in the development cycle. + +More information about PlatformIO Unit Testing: +- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html